While
the name of the calculated member can obviously be anything that is useful in
the environment in which we are creating it, we need to make the name intuitive
to the users. We used the term "4 Pd" versus "4 Qtr"
(or similar) for reasons we will discuss shortly.

11.
Type the following
MDX into the Value Expression section of the Calculated Member
Builder:

The MDX expression above is identical to that which we
assembled in the Sample Application, where we constructed and tested the MDX to
meet the business requirement. We simply take the expression in the WITH
MEMBER section and remove the single quotes surrounding it. We use a
different name for the calculated member than we did in the Sample Application,
because we want to differentiate it from additional members we will create in
subsequent articles, which will also be designed to return rolling averages.

The Calculated
Member Builder appears with our input as depicted in Illustration 7.

A
message box appears, as shown in Illustration 8, informing us that the
syntax is acceptable.

Illustration 8: Testing
Positive for Syntax Correctness

13.
Click OK to
close the Calculated Member Builder, and to save our new calculated
measure.

The
new Calculated Measure appears in the tree within the Calculated
Members folder, as depicted in Illustration 9.

Illustration 9: The New
Calculated Measure in the Calculated Members Folder

While
no other calculated members appear in the illustration above, this view may
differ from your own, depending upon differing activities that have been
conducted with the Warehouse cube in your own environment. As another
matter, although the actions we have performed to this point alone do not
require it, let's process the cube to make sure we are all in a similar "processed"
state.

14.
Select Tools
--> Process Cube to process the Sales cube.

15.
Click Yes
on the Save the Cube dialog that appears next, as shown in Illustration
8.

Illustration 10: Click "Yes"
to Save the Cube

16.
Click No
on the dialog that appears next, as shown in Illustration 11; we will
not design aggregations at present.

Illustration 11: Click "No"
to Designing Aggregations

The Process
a Cube dialog appears, as depicted in Illustration 12, where we want the processing
method set to Full Process. Full processing for the Warehouse
cube will be relatively quick, so we will perform it to ensure that all is
refreshed.

Illustration 12: Full
Process Selected in the Process a Cube Dialog

17.
Ensure that
the Full Process radio button is selected on the Process a Cube
dialog.